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參數(shù)資料
| 型號： | CDC244 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal Clock Driver with 3 State Output(八時鐘驅(qū)動器(三態(tài)輸出)) |
| 中文描述： | 八路時鐘驅(qū)動器，帶有三態(tài)輸出（八時鐘驅(qū)動器（三態(tài)輸出）） |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 148K |
| 代理商： | CDC244 |
CDC244
OCTAL CLOCK DRIVER
WITH 3-STATE OUTPUTS
SCAS501A – APRIL 1995 – REVISED NOVEMBER 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
MIN
MAX
UNIT
fclock
VCC
VIH
VIL
VI
IOH
IOL
t/
v
TA
NOTE 3: Unused or floating control inputs must be held high or low.
Clock frequency
MHz
Supply voltage
4.5
5.5
V
High-level input voltage
2
V
Low-level input voltage
0.8
V
Input voltage
0
VCC
–32
V
High-level output current
mA
Low-level output current
64
mA
Input transition rise or fall rate
5
ns/V
°
C
Operating free-air temperature
–40
85
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25
°
C
TYP
MIN
MAX
UNIT
MIN
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5 V,
VCC = 4.5 V
VCC = 4.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 0,
VCC = 5.5 V,
VCC = 5.5 V,
II = –18 mA
IOH = –3 mA
IOH = –3 mA
IOH = –32 mA
IOL = 64 mA
VI = VCC or GND
VO = 2.7 V
VO = 0.5 V
VI or VO
VO = 5.5 V
VO = 2.5 V
–1.2
–1.2
V
VOH
2.5
2.5
V
3
3
2
2
VOL
II
IOZH
IOZL
Ioff
ICEX
IO§
0.55
±
1
10
–10
±
100
0.55
±
1
10
–10
±
100
V
μ
A
μ
A
μ
A
μ
A
μ
A
mA
μ
A
mA
μ
A
4.5 V
Outputs high
50
50
–50
–100
–180
–50
–180
ICC
VCC = 5.5 V,
VI = VCC or GND
5 5 V
IO = 0,
Outputs high
1
250
250
Outputs low
24
30
30
Outputs disabled
0.5
250
250
VCC = 5.5 V,
One input at 3.4 V,
Other inputs at VCC
or GND
t t 3 4 V
Data inputs
Outputs enabled
1.5
1.5
ICC
Outputs disabled
0.05
0.05
mA
Control inputs
1.5
1.5
Ci
Co
VI = 2.5 V or 0.5 V
VO = 2.5 V or 0.5 V
3
pF
8
pF
All typical values are at VCC = 5 V.
This limit may vary among suppliers.
§Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
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